which is major sorce of energy for body?

carbohydrates or lipids?

bcz lipids stores double amount of energy then carbohydrates so does they also provide more energy then carbohydrates or not?

carbohydrate is preferred as source of energy. lipid may give double the amount of energy carbohydrate give,outside the cell but inside the cell much of the energy is lost in the form of heat and thus give energy equal to that of carbohydrate. carbohydrate is more widely available inside the cell than lipids